摘要
本文基于广义二维扩频的方法,结合M-ary扩频方式,提出了一种M-ary广义二维扩频的方法,给出了该方法的发射机和接收机的工作原理.并在瑞利衰落信道中,分析了M-ary广义二维扩频解调的误比特率性能,得到了误比特率的理论分析结果,同时进行了计算机仿真.计算机仿真曲线与理论分析曲线相吻合,进一步验证了理论分析的正确性.
The architecture of an M-ary two dimensional spread spectrum （M-2DSS） system which is motivated by combining two dimensional spread spectrum with M-ary spread spectrum is proposed. It employs a group of orthogonal matrixes to present the input M-ary codes and performs two dimensional spread spectrum on the orthogonal matrixes in the transmitter. In order to evaluate the bit error rate （BER） performance of the proposed system, we have analyzed the theoretical BER performance of the M-2DSS system over Rayleigh fading channels. Finally, compared with the computer simulation results,it shows that the analyzed results agree well with the simulation results. It also supports the correctuess of the theoretical BER analysis.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2006年第1期99-102,共4页
Acta Electronica Sinica
基金
国家自然科学基金(No.60272009
60572090
60472045
60496313)
博士点基金(No.20050614009)
